HYDRAULIC UNIT AND METHOD FOR PROVIDING A PRESSURIZED HYDRAULIC FLUID

摘要

The invention relates to a hydraulic unit (2) for providing a pressurized hydraulic fluid at an outlet (36, 36A, B), which comprises an electric motor (14) and a pump (16) operated by said motor for generating pressure. A reservoir (5) having a variable compensation volume stores the hydraulic fluid primed by the pump (16) in a gas-free manner. The hydraulic fluid is especially pressurized in order to safely and reliably guarantee that the hydraulic fluid is gas-free. The inventive design allows for the safe and operationally reliable use of the hydraulic unit (2) even at high acceleration values. The hydraulic unit (2) is especially adapted for use in an industrial robot.